A classified video of the assault on the U.S. consulate in Benghazi, Libya, shows a sudden attack by armed men who broke through the compound’s gates within minutes, according to lawmakers who saw the recording.

“People showed up at the gate very quickly, breached it, and poured inside,” said Representative Adam Smith, the senior Democrat on the House Armed Services Committee, who attended a closed-door briefing today with James Clapper, the director of national intelligence, on the Sept. 11 attack.

“It happened very quickly,” said Smith, of Washington state. “They weren’t just standing outside.”